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---
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stage: Systems
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group: Distribution
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
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---
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# Performing operations in GitLab **(FREE SELF)**
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Keep your GitLab instance up and running smoothly.
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- [Upgrading GitLab ](../../update/index.md ).
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- [Rake tasks ](../../raketasks/index.md ): Tasks for common administration and operational processes such as
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[cleaning up unneeded items from GitLab instance ](../../raketasks/cleanup.md ), integrity checks,
and more.
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- [Moving repositories ](moving_repositories.md ): Moving all repositories managed
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by GitLab to another file system or another server.
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- [Sidekiq MemoryKiller ](../sidekiq/sidekiq_memory_killer.md ): Configure Sidekiq MemoryKiller
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to restart Sidekiq.
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- [Multiple Sidekiq processes ](../sidekiq/extra_sidekiq_processes.md ): Configure multiple Sidekiq processes to ensure certain queues always have dedicated workers, no matter the number of jobs that must be processed. ** (FREE SELF)**
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- [Puma ](puma.md ): Understand Puma and puma-worker-killer.
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- [`gitlab-sshd` ](gitlab_sshd.md ): Use GitLab SSH daemon instead of OpenSSH.
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- Speed up SSH operations by
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[Authorizing SSH users via a fast, indexed lookup to the GitLab database ](fast_ssh_key_lookup.md ), and/or
by [doing away with user SSH keys stored on GitLab entirely in favor of SSH certificates ](ssh_certificates.md ).
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- [File System Performance Benchmarking ](filesystem_benchmarking.md ): File system
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performance can have a big impact on GitLab performance, especially for actions
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that read or write Git repositories. This information helps benchmark
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file system performance against known good and bad real-world systems.
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- [The Rails Console ](rails_console.md ): Provides a way to interact with your GitLab instance from the command line.
Used for troubleshooting a problem or retrieving some data that can only be done through direct access to GitLab.
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- [ChatOps Scripts ](https://gitlab.com/gitlab-com/chatops ): The GitLab.com Infrastructure team uses this repository to house
common ChatOps scripts they use to troubleshoot and maintain the production instance of GitLab.com.
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These scripts can be used by administrators of GitLab instances of all sizes.
